US20210380071A1 - Housing device and system - Google Patents
Housing device and system Download PDFInfo
- Publication number
- US20210380071A1 US20210380071A1 US17/233,000 US202117233000A US2021380071A1 US 20210380071 A1 US20210380071 A1 US 20210380071A1 US 202117233000 A US202117233000 A US 202117233000A US 2021380071 A1 US2021380071 A1 US 2021380071A1
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- United States
- Prior art keywords
- signal
- housing
- electronic key
- vehicle
- wavelength
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/20—Means to switch the anti-theft system on or off
- B60R25/24—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user
- B60R25/245—Means to switch the anti-theft system on or off using electronic identifiers containing a code not memorised by the user where the antenna reception area plays a role
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R25/00—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles
- B60R25/01—Fittings or systems for preventing or indicating unauthorised use or theft of vehicles operating on vehicle systems or fittings, e.g. on doors, seats or windscreens
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00944—Details of construction or manufacture
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
- H04W4/30—Services specially adapted for particular environments, situations or purposes
- H04W4/40—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P]
- H04W4/48—Services specially adapted for particular environments, situations or purposes for vehicles, e.g. vehicle-to-pedestrians [V2P] for in-vehicle communication
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
- G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
- G07C2009/00793—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by Hertzian waves
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00944—Details of construction or manufacture
- G07C2009/0096—Electronic keys comprising a non-biometric sensor
Definitions
- the present invention relates to a housing device and a system.
- EP 3418985 discloses a technology where a housing that stores an electronic key is installed in a vehicle interior, and a user remotely operates the electronic key by using a device carried by the user and thereby unlocks a door of the vehicle.
- the present invention is made in light of the above problem, and an object of the present invention is to provide a mechanism that can further improve security of an electronic key installed in a vehicle interior.
- a housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle, the housing device comprising: a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device; a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user; and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, wherein the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the second signal is used to control a control target device installed in the vehicle.
- a system comprising: an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle; a housing device configured to store the electronic key; and a portable device carried by a user, wherein the housing device includes a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device, a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device, and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the second signal is used to control a control target device installed in the vehicle.
- a system comprising: an in-vehicle device mounted on a vehicle; an electronic key configured to perform wireless communication with the in-vehicle device; and a housing device configured to store the electronic key, wherein the housing device includes a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device, a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user, and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the in-vehicle device controls a control target device based on the received second signal.
- FIG. 1 is a block diagram illustrating a configuration example of a system 1 according to an embodiment of the present invention.
- FIG. 2 is a diagram schematically illustrating a configuration example of a housing device 10 and a configuration example of an electronic key 20 stored inside the housing device 10 according to the embodiment.
- FIG. 3 is a diagram for describing a slit-shaped passage structure 115 provided to a housing 110 according to the embodiment.
- FIG. 4 is a diagram for describing a hole-shaped passage structure 115 provided to the housing 110 according to the embodiment.
- FIG. 5 is a sequence diagram illustrating an example of a flow of a process of the system 1 according to the embodiment.
- FIG. 1 is a block diagram illustrating the configuration example of the system 1 according to the embodiment of the present invention.
- the system 1 according to the present embodiment includes a housing device 10 installed in a vehicle interior of a vehicle V, an electronic key 20 stored in the housing device 10 , an in-vehicle device 30 mounted on the vehicle V, and a portable device 40 carried by a user.
- the housing device 10 according to the present embodiment is a device that is mounted on the vehicle V, and stores the electronic key that performs wireless communication with the in-vehicle device 30 mounted on the identical vehicle V.
- a detailed configuration example of the housing device 10 according to the present embodiment will be separately described.
- the electronic key 20 is a device that is provided together with the vehicle V to the user.
- the user can lock or unlock a door device installed in the vehicle V and start an engine by using the electronic key 20 without using a cylinder key.
- the in-vehicle device 30 is a device that performs wireless communication with the electronic key 20 , and authenticates the electronic key 20 based on a result of the wireless communication. Further, the in-vehicle device 30 controls a control target device installed in the vehicle V based on a result of the above authentication. Note that an example of the control target device according to the present embodiment is the door device and the engine.
- the portable device 40 according to the present embodiment is carried by the user, and is configured to remotely operate the electronic key 20 through wireless communication with the housing device 10 .
- the portable device 40 according to the present embodiment may be, for example, an information processing device such as a smartphone, a tablet, or a wearable device.
- the configuration example of the system 1 according to the present embodiment has been described above. Note that the above configuration described with reference to FIG. 1 is just an example, and the configuration of the system 1 according to the present embodiment is not limited this example.
- the configuration of the system 1 according to the present embodiment is flexibly modifiable according to a specification or an operation.
- the in-vehicle device 30 authenticates the electronic key 20
- the electronic key 20 is carried by the user.
- the in-vehicle device 30 may authenticate the electronic key 20 based on a result of wireless communication that uses, for example, a first signal of a first frequency band and a second signal of a second frequency band whose wavelength is shorter than a wavelength of the first signal.
- the in-vehicle device 30 may transmit the first signal.
- the electronic key 20 carried by the user receives the above first signal, and transmits the second signal as a response to the first signal.
- the in-vehicle device 30 receives the above second signal, and authenticates the electronic key 20 based on, for example, identification information included in the second signal.
- the in-vehicle device 30 when verifying authenticity of the electronic key 20 , the in-vehicle device 30 performs control to unlock the door device (an example of the control target device according to the present embodiment) installed in the vehicle V.
- the in-vehicle device 30 may transmit the first signal.
- the in-vehicle device 30 may permit the engine (an example of the control target device according to the present embodiment) to start.
- the electronic key 20 is stored in the housing device 10 and is installed in the vehicle interior as in the present embodiment.
- the user remotely operates the electronic key 20 stored in the housing device 10 by using the portable device 40 from an outside of the vehicle V.
- the portable device 40 transmits a trigger signal based on a user's operation.
- the housing device 10 that has received the trigger signal causes an internally disposed actuator 130 to move to operate an operation section 210 installed in the electronic key 20 .
- the electronic key 20 transmits the second signal based on a fact that the operation section 210 has been operated.
- the in-vehicle device 30 When verifying the authenticity of the electronic key 20 based on the received second signal, the in-vehicle device 30 performs control to unlock the door device installed in the vehicle V.
- the electronic key 20 stored in the housing device 10 can receive the first signal transmitted by the in-vehicle device 30 , the electronic key 20 transmits the second signal as a response to the first signal, and the in-vehicle device 30 authenticates the electronic key 20 . That is, the third party can unrightfully start the engine and unrightfully use the vehicle V as a result in some cases.
- the housing device 10 includes a housing 110 that is formed by using a material that shields the first signal of the first frequency band, a trigger signal reception antenna 120 that receives the trigger signal transmitted by the portable device 40 carried by the user, and the actuator 130 that is disposed inside the housing 110 , and operates the operation section 210 installed in the electronic key 20 based on the trigger signal.
- the housing 110 includes a passage structure 115 that allows the second signal of the second frequency band that is transmitted by the electronic key 20 based on the operation on the operation section 210 and whose wavelength is shorter than the wavelength of the first signal to pass outside.
- the housing device 10 enables the second signal transmitted by the electronic key 20 to reach an outside of the housing 110 while preventing the electronic key 20 stored inside the housing device 10 from receiving the first signal.
- the electronic key 20 cannot receive the first signal and therefore does not transmit the second signal, so that it is possible to prevent the in-vehicle device 30 from authenticating the electronic key 20 .
- the legitimate user with the valid use right of the vehicle V can access the vehicle interior by remotely operating the electronic key 20 using the portable device 40 . Further, the above user causes the electronic key 20 to receive the first signal and transmit the second signal by taking the electronic key 20 out of the housing device 10 in the vehicle interior. Accordingly, the in-vehicle device 30 authenticates the electronic key 20 , so that the user can start the engine and move the vehicle V.
- FIG. 2 is a diagram schematically illustrating the configuration example of the housing device 10 and a configuration example of the electronic key 20 stored inside the housing device 10 according to the present embodiment.
- the housing device 10 according to the present embodiment includes the housing 110 , the trigger signal reception antenna 120 , and the actuator 130 .
- the electronic key 20 includes at least the operation section 210 .
- the housing 110 according to the present embodiment is formed by using the material that shields the first signal of the first frequency band.
- the first frequency band according to the present embodiment is, for example, a Low Frequency (LF) range.
- LF Low Frequency
- the housing 110 may be formed by using a highly magnetic permeable material having a predetermined magnetic permeability or more to shield the first signal of the first frequency band and the second signal of the second frequency band whose wavelength is shorter than the wavelength of the first signal.
- the second frequency band according to the present embodiment is, for example, an Ultra High Frequency (UHF) range.
- UHF Ultra High Frequency
- the highly magnetic permeable material according to the present embodiment is iron.
- the housing 110 may be formed by being covered with an iron plate of appropriately 0.5 mm to 5 mm. Further, in this case, it is difficult to cover a part related to opening and closing of the housing 110 seamlessly with the iron plate. Therefore, the part may be formed such that the iron plate overlaps appropriately 10 mm, or may adopt a structure that enables electric conduction.
- the highly magnetic permeable material according to the present embodiment is not limited to iron, and may adopt, for example, silicon steel.
- a conductor e.g., aluminum or copper
- a gap of the part related to opening and closing of the housing 110 needs to adopt a structure that enables electric conduction, and be provided such that the eddy current produced in the first frequency band in particular does not become intermittent.
- the electronic key 20 stored in the housing 110 formed as described cannot receive the first signal, so that it is possible to prevent the above-described third party from unrightfully starting the engine.
- the housing 110 is provided with the passage structure 115 that allows the second signal transmitted by the electronic key 20 to pass outside.
- the passage structure 115 may be a slit that is formed in a size and a shape that do not allow the first signal to pass through and allow the second signal to pass through.
- the length in a longitudinal direction of the slit-shaped passage structure 115 according to the present embodiment may be determined based on the wavelength of the first signal and the wavelength of the second signal.
- FIG. 3 is a diagram for describing the slit-shaped passage structure 115 provided to the housing 110 according to the present embodiment.
- a signal shield effect SE of the slit is expressed by a following equation (1).
- a condition is that the length in the longitudinal direction of the slit-shaped passage structure 115 is a, the length in a lateral direction of the slit-shaped passage structure 115 is b, the length a in the longitudinal direction is sufficiently longer than the length b in the lateral direction (b ⁇ a), and the length a in the longitudinal direction is shorter than the wavelength ⁇ of the signal (a ⁇ ).
- the signal when the length a in the longitudinal direction is ⁇ /2, the signal does not attenuate at all, and passes through the slit-shaped passage structure 115 .
- the shield effect SE 60 dB holds, so that it is possible to effectively shield the first signal.
- the length in the longitudinal direction of the slit-shaped passage structure 115 according to the present embodiment is determined based on the wavelength of the first signal and the wavelength of the second signal.
- the length in the lateral direction of the slit-shaped passage structure 115 may be formed to be, for example, approximately 3 mm in this case.
- the housing 110 when a material that is not a highly magnetic permeable material such as afore-mentioned aluminum is used for the housing 110 , a radio wave of the first frequency band leaks to the inside of the housing 110 near the slit-shaped passage structure 115 . Therefore, it is desired that the electronic key 20 is disposed apart from the slit-shaped passage structure 115 inside the housing 110 .
- the number of the slit-shaped passage structures 115 according to the present embodiment is not limited to one.
- the plurality of slit-shaped passage structures 115 according to the present embodiment may be provided.
- the trigger signal reception antenna 120 receives the trigger signal transmitted by the portable device 40 .
- the trigger signal reception antenna 120 may be disposed inside the housing 110 as illustrated in, for example, FIG. 2 .
- the trigger signal needs to pass through the slit-shaped passage structure 115 , and reach the inside of the housing 110 . Therefore, a signal having a wavelength equal to or more than the wavelength of the second signal is used as the trigger signal.
- a Bluetooth (registered trademark) signal may be adopted as the trigger signal.
- the trigger signal reception antenna 120 may be disposed outside the housing 110 .
- the trigger signal does not need to pass through the slit-shaped passage structure 115 , and therefore a signal of an arbitrary wavelength is used.
- the trigger signal may be a Bluetooth signal, or may be a signal of a frequency band used for Near Field Communication (NFC).
- NFC Near Field Communication
- the actuator 130 moves based on the trigger signal received by the trigger signal reception antenna 120 , and operates the operation section 210 installed in the electronic key 20 .
- the actuator 130 is formed and disposed according to shapes and specifications of the electronic key 20 and the operation section 210 .
- the actuator is formed and disposed so as to be able to push the operation section 210 .
- the actuator is formed and disposed so as to be able to slide the operation section 210 .
- the configuration example of the housing device 10 according to the present embodiment has been described above. Note that the above configuration described with reference to FIGS. 2 and 3 is an example, and the configuration of the housing device 10 according to the present embodiment is not limited to this example.
- the passage structure 115 according to the present embodiment may not be necessarily formed in the slit shape.
- FIG. 4 is a diagram for describing another example of the passage structure 115 according to the present embodiment.
- the passage structure 115 according to the present embodiment is formed in, for example, a hole shape whose diameter is approximately 5 to 10 mm. Note that part of the configuration illustrated in FIG. 2 is omitted in FIG. 4 .
- the first signal of the first frequency band can hardly pass through the hole-shaped passage structure 115 irrespectively of a magnetic permeability of a material used for the housing 110 .
- the second signal of the second frequency band also has difficulty in passing through the hole-shaped passage structure 115 .
- the housing device 10 may further include a transmission/reception antenna 152 that is disposed outside the housing 110 , a transmission/reception antenna 154 that is disposed inside the housing 110 , and a cable 156 that passes through the hole-shaped passage structure 115 and connects the transmission/reception antenna 152 and the transmission/reception antenna 154 .
- the transmission/reception antenna 152 and the transmission/reception antenna 154 are antennas that can transmit and receive the second signal of the second frequency band.
- the cable 156 is a cable (e.g., coaxial cable) that can convey the second signal of the second frequency band.
- the second signal transmitted by the electronic key 20 is received by the transmission/reception antenna 154 , is conveyed through the cable 156 , and then is transmitted by the transmission/reception antenna 152 from the outside of the housing 110 .
- the trigger signal can reach the inside of the housing 110 through, for example, the hole-shaped passage structure 115 similar to the second signal.
- the housing device 10 may additionally include a dedicated passage structure that allows the trigger signal to pass through, a transmission/reception antenna, and a cable.
- the passage structure, the transmission/reception antenna, and the cable according to the present embodiment can be designed as appropriate according to a property of a signal to be used.
- FIG. 5 is a sequence diagram illustrating an example of the flow of the process of the system 1 according to the present embodiment.
- the portable device 40 carried by the user first accepts a user's operation (S 102 ).
- the portable device 40 transmits the trigger signal based on the operation accepted in Step S 102 (S 104 ).
- the actuator 130 of the housing device 10 moves based on the trigger signal received by the trigger signal reception antenna 120 in Step S 104 , and operates the operation section 210 installed in the electronic key 20 (S 106 ).
- the electronic key 20 transmits the second signal based on the fact that the operation section 210 has been operated in Step S 106 (S 108 ).
- the in-vehicle device 30 that has received the second signal in Step S 108 authenticates the electronic key 20 based on information included in the second signal (S 110 ).
- the in-vehicle device 30 controls the control target device installed in the identical vehicle V (S 112 ).
- control target device may be, for example, the door device installed in the vehicle V.
- the in-vehicle device 30 performs control to unlock or lock the door device.
- the in-vehicle device 30 may perform control to unlock the door device.
- the in-vehicle device 30 may perform control to lock the door device.
- a program that configures the software is stored in advance in, for example, a recording medium (non-transitory media) that is provided inside or outside each device. Further, each program is, for example, read on an RAM when executed by a computer, and is executed by a processor such as a CPU.
- the above recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, or a flash memory. Further, the above computer program may be distributed via, for example, a network without using the recording medium.
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Abstract
There is provided a housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device, the housing device comprising: a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device; a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device; and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, wherein the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key, and having a shorter wavelength than a wavelength of the first signal, and the second signal is used to control a control target device installed in the vehicle.
Description
- This application is based upon and claims benefit of priority from Japanese Patent Application No. 2020-096914, filed on Jun. 3, 2020, the entire contents of which are incorporated herein by reference.
- The present invention relates to a housing device and a system.
- In recent years, technologies that control a device based on a result of wireless communication have been developed. As an example of a system that uses the above technologies, there is a system that locks or unlocks a door device installed in a vehicle based on a result of wireless communication between an electronic key and an in-vehicle device that is mounted on the vehicle. Further, there has been also a proposal for effectively using the above-described electronic key. For example, EP 3418985 discloses a technology where a housing that stores an electronic key is installed in a vehicle interior, and a user remotely operates the electronic key by using a device carried by the user and thereby unlocks a door of the vehicle.
- In this regard, in a case where the electronic key is installed in the vehicle interior and used similar to the technology disclosed in EP 3418985, an important task is to secure security.
- Accordingly, the present invention is made in light of the above problem, and an object of the present invention is to provide a mechanism that can further improve security of an electronic key installed in a vehicle interior.
- To solve the above described problem, according to an aspect of the present invention, there is provided a housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle, the housing device comprising: a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device; a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user; and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, wherein the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the second signal is used to control a control target device installed in the vehicle.
- To solve the above described problem, according to another aspect of the present invention, there is provided a system comprising: an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle; a housing device configured to store the electronic key; and a portable device carried by a user, wherein the housing device includes a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device, a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device, and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the second signal is used to control a control target device installed in the vehicle.
- To solve the above described problem, according to another aspect of the present invention, there is provided a system comprising: an in-vehicle device mounted on a vehicle; an electronic key configured to perform wireless communication with the in-vehicle device; and a housing device configured to store the electronic key, wherein the housing device includes a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device, a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user, and an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and the in-vehicle device controls a control target device based on the received second signal.
- As described above, according to the present invention, it is possible to further improve security of an electronic key installed in a vehicle interior.
-
FIG. 1 is a block diagram illustrating a configuration example of asystem 1 according to an embodiment of the present invention. -
FIG. 2 is a diagram schematically illustrating a configuration example of ahousing device 10 and a configuration example of anelectronic key 20 stored inside thehousing device 10 according to the embodiment. -
FIG. 3 is a diagram for describing a slit-shaped passage structure 115 provided to ahousing 110 according to the embodiment. -
FIG. 4 is a diagram for describing a hole-shaped passage structure 115 provided to thehousing 110 according to the embodiment. -
FIG. 5 is a sequence diagram illustrating an example of a flow of a process of thesystem 1 according to the embodiment. - Hereinafter, referring to the appended drawings, preferred embodiments of the present invention will be described in detail. It should be noted that, in this specification and the appended drawings, structural elements that have substantially the same function and structure are denoted with the same reference numerals, and repeated explanation thereof is omitted.
- <<1.1. System Configuration Example>>
- First, a configuration example of a
system 1 according to an embodiment of the present invention will be described.FIG. 1 is a block diagram illustrating the configuration example of thesystem 1 according to the embodiment of the present invention. As illustrated inFIG. 1 , thesystem 1 according to the present embodiment includes ahousing device 10 installed in a vehicle interior of a vehicle V, anelectronic key 20 stored in thehousing device 10, an in-vehicle device 30 mounted on the vehicle V, and aportable device 40 carried by a user. - (Housing Device 10)
- The
housing device 10 according to the present embodiment is a device that is mounted on the vehicle V, and stores the electronic key that performs wireless communication with the in-vehicle device 30 mounted on the identical vehicle V. A detailed configuration example of thehousing device 10 according to the present embodiment will be separately described. - (Electronic Key 20)
- The
electronic key 20 according to the present embodiment is a device that is provided together with the vehicle V to the user. The user can lock or unlock a door device installed in the vehicle V and start an engine by using theelectronic key 20 without using a cylinder key. - (In-Vehicle Device 30)
- The in-
vehicle device 30 according to the present embodiment is a device that performs wireless communication with theelectronic key 20, and authenticates theelectronic key 20 based on a result of the wireless communication. Further, the in-vehicle device 30 controls a control target device installed in the vehicle V based on a result of the above authentication. Note that an example of the control target device according to the present embodiment is the door device and the engine. - (Portable Device 40)
- The
portable device 40 according to the present embodiment is carried by the user, and is configured to remotely operate theelectronic key 20 through wireless communication with thehousing device 10. Theportable device 40 according to the present embodiment may be, for example, an information processing device such as a smartphone, a tablet, or a wearable device. - The configuration example of the
system 1 according to the present embodiment has been described above. Note that the above configuration described with reference toFIG. 1 is just an example, and the configuration of thesystem 1 according to the present embodiment is not limited this example. The configuration of thesystem 1 according to the present embodiment is flexibly modifiable according to a specification or an operation. - Hereinafter, a general use example where the in-
vehicle device 30 authenticates theelectronic key 20 will be cited and described. In the general use example, theelectronic key 20 is carried by the user. - Further, the in-
vehicle device 30 may authenticate theelectronic key 20 based on a result of wireless communication that uses, for example, a first signal of a first frequency band and a second signal of a second frequency band whose wavelength is shorter than a wavelength of the first signal. - For example, when detecting that the user has touched a door knob on an exterior of the door device installed in the vehicle V, the in-
vehicle device 30 may transmit the first signal. - In this case, the
electronic key 20 carried by the user receives the above first signal, and transmits the second signal as a response to the first signal. - The in-
vehicle device 30 receives the above second signal, and authenticates theelectronic key 20 based on, for example, identification information included in the second signal. - In this regard, when verifying authenticity of the
electronic key 20, the in-vehicle device 30 performs control to unlock the door device (an example of the control target device according to the present embodiment) installed in the vehicle V. - Further, when, for example, detecting that brakes have been applied upon starting of the engine, the in-
vehicle device 30 may transmit the first signal. - In this regard, when verifying the authenticity of the
electronic key 20 based on the second signal transmitted by theelectronic key 20 as the response to the above first signal, the in-vehicle device 30 may permit the engine (an example of the control target device according to the present embodiment) to start. - According to the above-described control, it is possible to access a vehicle interior and start the engine without operating a conventionally used cylinder key, so that it is possible to improve user friendliness.
- On the other hand, a case will be assumed where the
electronic key 20 is stored in thehousing device 10 and is installed in the vehicle interior as in the present embodiment. In this case, the user remotely operates theelectronic key 20 stored in thehousing device 10 by using theportable device 40 from an outside of the vehicle V. - More specifically, the
portable device 40 transmits a trigger signal based on a user's operation. - Further, the
housing device 10 that has received the trigger signal causes an internally disposedactuator 130 to move to operate anoperation section 210 installed in theelectronic key 20. - The
electronic key 20 transmits the second signal based on a fact that theoperation section 210 has been operated. - When verifying the authenticity of the
electronic key 20 based on the received second signal, the in-vehicle device 30 performs control to unlock the door device installed in the vehicle V. - According to the above-described control, it is possible to access the vehicle V while leaving the
electronic key 20 installed in the vehicle interior of the vehicle V. Consequently, by distributing, for example, authentication information for enabling wireless communication with thehousing device 10 to theportable device 40 in advance, it is possible to share the vehicle V and theelectronic key 20 between a plurality of users. - However, for example, a case will be assumed where a third party without a valid use right of the vehicle V intrudes the vehicle interior of the vehicle V by an unrightful action of, for example, breaking a door.
- In this regard, if the
electronic key 20 stored in thehousing device 10 can receive the first signal transmitted by the in-vehicle device 30, theelectronic key 20 transmits the second signal as a response to the first signal, and the in-vehicle device 30 authenticates theelectronic key 20. That is, the third party can unrightfully start the engine and unrightfully use the vehicle V as a result in some cases. - A technical idea of the present invention is made focusing upon the above point, and makes it possible to further improve security of the electronic key 20 installed in the vehicle interior. To realize this improvement, the
housing device 10 according to the embodiment of the present invention includes ahousing 110 that is formed by using a material that shields the first signal of the first frequency band, a triggersignal reception antenna 120 that receives the trigger signal transmitted by theportable device 40 carried by the user, and theactuator 130 that is disposed inside thehousing 110, and operates theoperation section 210 installed in the electronic key 20 based on the trigger signal. Further, one of features is that thehousing 110 according to the embodiment of the present invention includes apassage structure 115 that allows the second signal of the second frequency band that is transmitted by the electronic key 20 based on the operation on theoperation section 210 and whose wavelength is shorter than the wavelength of the first signal to pass outside. - That is, the
housing device 10 according to the present embodiment enables the second signal transmitted by the electronic key 20 to reach an outside of thehousing 110 while preventing the electronic key 20 stored inside thehousing device 10 from receiving the first signal. - Accordingly, even when the third party unrightfully intrudes the vehicle interior of the vehicle V, the electronic key 20 cannot receive the first signal and therefore does not transmit the second signal, so that it is possible to prevent the in-
vehicle device 30 from authenticating theelectronic key 20. - On the other hand, the legitimate user with the valid use right of the vehicle V can access the vehicle interior by remotely operating the electronic key 20 using the
portable device 40. Further, the above user causes the electronic key 20 to receive the first signal and transmit the second signal by taking the electronic key 20 out of thehousing device 10 in the vehicle interior. Accordingly, the in-vehicle device 30 authenticates theelectronic key 20, so that the user can start the engine and move the vehicle V. - The configuration example of the
housing device 10 according to the present embodiment having the above features will be described in detail below. - <<1.2. Configuration Example of
Housing Device 10>> -
FIG. 2 is a diagram schematically illustrating the configuration example of thehousing device 10 and a configuration example of the electronic key 20 stored inside thehousing device 10 according to the present embodiment. As described above, thehousing device 10 according to the present embodiment includes thehousing 110, the triggersignal reception antenna 120, and theactuator 130. Further, theelectronic key 20 includes at least theoperation section 210. - (Housing 110)
- The
housing 110 according to the present embodiment is formed by using the material that shields the first signal of the first frequency band. The first frequency band according to the present embodiment is, for example, a Low Frequency (LF) range. - More specifically, the
housing 110 according to the present embodiment may be formed by using a highly magnetic permeable material having a predetermined magnetic permeability or more to shield the first signal of the first frequency band and the second signal of the second frequency band whose wavelength is shorter than the wavelength of the first signal. - The second frequency band according to the present embodiment is, for example, an Ultra High Frequency (UHF) range.
- An example of the highly magnetic permeable material according to the present embodiment is iron. When, for example, iron is used as the material, the
housing 110 may be formed by being covered with an iron plate of appropriately 0.5 mm to 5 mm. Further, in this case, it is difficult to cover a part related to opening and closing of thehousing 110 seamlessly with the iron plate. Therefore, the part may be formed such that the iron plate overlaps appropriately 10 mm, or may adopt a structure that enables electric conduction. - On the other hand, the highly magnetic permeable material according to the present embodiment is not limited to iron, and may adopt, for example, silicon steel. Note that, instead of the highly magnetic permeable material, a conductor (e.g., aluminum or copper) that produces an eddy current can shield the first signal of the first frequency band and the second signal of the second frequency band. In this regard, when a material of a low magnetic permeability such as aluminum is used, a gap of the part related to opening and closing of the
housing 110 needs to adopt a structure that enables electric conduction, and be provided such that the eddy current produced in the first frequency band in particular does not become intermittent. - The electronic key 20 stored in the
housing 110 formed as described cannot receive the first signal, so that it is possible to prevent the above-described third party from unrightfully starting the engine. - On the other hand, it is demanded for use of the legitimate user that the second signal transmitted by the
electronic key 20 reaches the outside of thehousing 110. - To meet this demand, the
housing 110 according to the present embodiment is provided with thepassage structure 115 that allows the second signal transmitted by the electronic key 20 to pass outside. - The
passage structure 115 according to the present embodiment may be a slit that is formed in a size and a shape that do not allow the first signal to pass through and allow the second signal to pass through. - In this case, the length in a longitudinal direction of the slit-shaped
passage structure 115 according to the present embodiment may be determined based on the wavelength of the first signal and the wavelength of the second signal. -
FIG. 3 is a diagram for describing the slit-shapedpassage structure 115 provided to thehousing 110 according to the present embodiment. - In this regard, in a case where there is a rectangular hole (slit) in a metal plate whose thickness d is 0 (or the thickness d can be regarded as 0. d<λ), a signal shield effect SE of the slit is expressed by a following equation (1).
- In this regard, as illustrated in
FIG. 3 , a condition is that the length in the longitudinal direction of the slit-shapedpassage structure 115 is a, the length in a lateral direction of the slit-shapedpassage structure 115 is b, the length a in the longitudinal direction is sufficiently longer than the length b in the lateral direction (b<<a), and the length a in the longitudinal direction is shorter than the wavelength λ of the signal (a<λ). -
SE=20 log(λ/2a) [dB] (1) - According to the above equation (1), when the length a in the longitudinal direction is λ/2, the signal does not attenuate at all, and passes through the slit-shaped
passage structure 115. Hence, when, for example, the frequency of the second signal is approximately 300 MHz, that is, when the wavelength λ of the second signal is approximately 1 m, and when the length a in the longitudinal direction of the slit is 50 cm, the shield effect SE=0 dB holds, so that it is possible to allow the second signal to completely pass through. - On the other hand, when the frequency of the first signal is approximately 300 KHz, that is, when the wavelength λ of the first signal is approximately 1 km, and when the length a in the longitudinal direction of the slit-shaped
passage structure 115 is 50 cm, the shield effect SE=60 dB holds, so that it is possible to effectively shield the first signal. - As described above, the length in the longitudinal direction of the slit-shaped
passage structure 115 according to the present embodiment is determined based on the wavelength of the first signal and the wavelength of the second signal. The shield effect SE=0 dB does not actually need to hold, and, from a viewpoint of, for example, miniaturization of thehousing device 10, the length in the longitudinal direction of the slit-shapedpassage structure 115 according to the present embodiment may be formed to be, for example, approximately 100 to 150 mm. Note that the length in the lateral direction of the slit-shapedpassage structure 115 may be formed to be, for example, approximately 3 mm in this case. - Note that, when a material that is not a highly magnetic permeable material such as afore-mentioned aluminum is used for the
housing 110, a radio wave of the first frequency band leaks to the inside of thehousing 110 near the slit-shapedpassage structure 115. Therefore, it is desired that theelectronic key 20 is disposed apart from the slit-shapedpassage structure 115 inside thehousing 110. - Further, the number of the slit-shaped
passage structures 115 according to the present embodiment is not limited to one. The plurality of slit-shapedpassage structures 115 according to the present embodiment may be provided. - By adjusting the size, the shape, and the number of the slit-shaped
passage structures 115 according to the present embodiment, it is possible to adjust shielding performance with respect to the first signal and communication performance with respect to the second signal. - Description will continue with reference to
FIG. 2 again. - (Trigger Signal Reception Antenna 120)
- The trigger
signal reception antenna 120 according to the present embodiment receives the trigger signal transmitted by theportable device 40. - The trigger
signal reception antenna 120 according to the present embodiment may be disposed inside thehousing 110 as illustrated in, for example,FIG. 2 . In this case, the trigger signal needs to pass through the slit-shapedpassage structure 115, and reach the inside of thehousing 110. Therefore, a signal having a wavelength equal to or more than the wavelength of the second signal is used as the trigger signal. For example, a Bluetooth (registered trademark) signal may be adopted as the trigger signal. - On the other hand, the trigger
signal reception antenna 120 according to the present embodiment may be disposed outside thehousing 110. In this case, the trigger signal does not need to pass through the slit-shapedpassage structure 115, and therefore a signal of an arbitrary wavelength is used. In this case, the trigger signal may be a Bluetooth signal, or may be a signal of a frequency band used for Near Field Communication (NFC). - (Actuator 130)
- The
actuator 130 according to the present embodiment moves based on the trigger signal received by the triggersignal reception antenna 120, and operates theoperation section 210 installed in theelectronic key 20. - Hence, the
actuator 130 is formed and disposed according to shapes and specifications of theelectronic key 20 and theoperation section 210. - In a case where, for example, the electronic key 20 transmits the second signal when the
operation section 210 that is a button switch is pushed, the actuator is formed and disposed so as to be able to push theoperation section 210. - Further, in a case where, for example, the electronic key 20 transmits the second signal when the
operation section 210 that is a slide switch is slid, the actuator is formed and disposed so as to be able to slide theoperation section 210. - The configuration example of the
housing device 10 according to the present embodiment has been described above. Note that the above configuration described with reference toFIGS. 2 and 3 is an example, and the configuration of thehousing device 10 according to the present embodiment is not limited to this example. - For example, the
passage structure 115 according to the present embodiment may not be necessarily formed in the slit shape. -
FIG. 4 is a diagram for describing another example of thepassage structure 115 according to the present embodiment. In the example illustrated inFIG. 4 , thepassage structure 115 according to the present embodiment is formed in, for example, a hole shape whose diameter is approximately 5 to 10 mm. Note that part of the configuration illustrated inFIG. 2 is omitted inFIG. 4 . - In this case, the first signal of the first frequency band can hardly pass through the hole-shaped
passage structure 115 irrespectively of a magnetic permeability of a material used for thehousing 110. - On the other hand, in this case, the second signal of the second frequency band also has difficulty in passing through the hole-shaped
passage structure 115. - To solve the above difficulty, the
housing device 10 according to the present embodiment may further include a transmission/reception antenna 152 that is disposed outside thehousing 110, a transmission/reception antenna 154 that is disposed inside thehousing 110, and acable 156 that passes through the hole-shapedpassage structure 115 and connects the transmission/reception antenna 152 and the transmission/reception antenna 154. - In this regard, the transmission/
reception antenna 152 and the transmission/reception antenna 154 are antennas that can transmit and receive the second signal of the second frequency band. - Further, the
cable 156 is a cable (e.g., coaxial cable) that can convey the second signal of the second frequency band. - According to the above-described configuration, the second signal transmitted by the
electronic key 20 is received by the transmission/reception antenna 154, is conveyed through thecable 156, and then is transmitted by the transmission/reception antenna 152 from the outside of thehousing 110. - Further, according to the above-described configuration, it is possible to allow the second signal transmitted by the electronic key 20 to pass to the outside of the
housing 110 while shielding the first signal of the first frequency band. - Note that, when the signal of the second frequency band is adopted for the trigger signal, the trigger signal can reach the inside of the
housing 110 through, for example, the hole-shapedpassage structure 115 similar to the second signal. - On the other hand, the
housing device 10 according to the present embodiment may additionally include a dedicated passage structure that allows the trigger signal to pass through, a transmission/reception antenna, and a cable. The passage structure, the transmission/reception antenna, and the cable according to the present embodiment can be designed as appropriate according to a property of a signal to be used. - <<1.3 Flow of Process>>
- Next, a flow of a process of the
system 1 according to the present embodiment will be described in detail.FIG. 5 is a sequence diagram illustrating an example of the flow of the process of thesystem 1 according to the present embodiment. - As illustrated in
FIG. 5 , theportable device 40 carried by the user first accepts a user's operation (S102). - Next, the
portable device 40 transmits the trigger signal based on the operation accepted in Step S102 (S104). - Next, the
actuator 130 of thehousing device 10 moves based on the trigger signal received by the triggersignal reception antenna 120 in Step S104, and operates theoperation section 210 installed in the electronic key 20 (S106). - Next, the electronic key 20 transmits the second signal based on the fact that the
operation section 210 has been operated in Step S106 (S108). - Next, the in-
vehicle device 30 that has received the second signal in Step S108 authenticates the electronic key 20 based on information included in the second signal (S110). - In this regard, when verifying the authenticity of the
electronic key 20, the in-vehicle device 30 controls the control target device installed in the identical vehicle V (S112). - As described above, the control target device according to the present embodiment may be, for example, the door device installed in the vehicle V. In this case, the in-
vehicle device 30 performs control to unlock or lock the door device. - When verifying the authenticity of the
electronic key 20 by the authentication based on the second signal in a state where the door device is locked, the in-vehicle device 30 may perform control to unlock the door device. - On the other hand, when verifying the authenticity of the
electronic key 20 by the authentication based on the second signal in a state where the door device is unlocked, the in-vehicle device 30 may perform control to lock the door device. - Heretofore, preferred embodiments of the present invention have been described in detail with reference to the appended drawings, but the present invention is not limited thereto. It should be understood by those skilled in the art that various changes and alterations may be made without departing from the spirit and scope of the appended claims.
- Further, a series of processes of each device described in the specification may be realized by using one of software, hardware, and a combination of the software and the hardware. A program that configures the software is stored in advance in, for example, a recording medium (non-transitory media) that is provided inside or outside each device. Further, each program is, for example, read on an RAM when executed by a computer, and is executed by a processor such as a CPU. The above recording medium is, for example, a magnetic disk, an optical disk, a magneto-optical disk, or a flash memory. Further, the above computer program may be distributed via, for example, a network without using the recording medium.
Claims (10)
1. A housing device configured to store an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle, the housing device comprising:
a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device;
a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user; and
an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal, wherein the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and
the second signal is used to control a control target device installed in the vehicle.
2. The housing device according to claim 1 ,
wherein the passage structure is a slit that is formed in a size and a shape that do not allow the first signal to pass through and allow the second signal to pass through.
3. The housing device according to claim 2 ,
wherein a length in a longitudinal direction of the slit is determined based on the wavelength of the first signal and the wavelength of the second signal.
4. The housing device according to claim 1 , wherein
the trigger signal reception antenna is disposed inside the housing, and
the trigger signal has a wavelength equal to or more than the wavelength of the second signal.
5. The housing device according to claim 1 ,
wherein the control target device includes at least a door device installed in the vehicle.
6. The housing device according to claim 1 ,
wherein the housing is formed by using a highly magnetic permeable material having a predetermined magnetic permeability or more.
7. A system comprising:
an electronic key configured to perform wireless communication with an in-vehicle device mounted on a vehicle;
a housing device configured to store the electronic key; and
a portable device carried by a user, wherein
the housing device includes
a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device,
a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device, and
an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal,
the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and
the second signal is used to control a control target device installed in the vehicle.
8. The system according to claim 7 , further comprising the in-vehicle device,
wherein the in-vehicle device controls the control target device based on the received second signal.
9. A system comprising:
an in-vehicle device mounted on a vehicle;
an electronic key configured to perform wireless communication with the in-vehicle device; and
a housing device configured to store the electronic key, wherein
the housing device includes
a housing formed by using a material that shields a first signal of a first frequency band transmitted by the in-vehicle device,
a trigger signal reception antenna configured to receive a trigger signal transmitted by a portable device carried by a user, and
an actuator disposed inside the housing, and configured to operate an operation section installed in the electronic key based on the trigger signal,
the housing includes a passage structure that allows a second signal of a second frequency band to pass outside, the second signal being transmitted by the electronic key based on the operation on the operation section, and having a shorter wavelength than a wavelength of the first signal, and
the in-vehicle device controls a control target device based on the received second signal.
10. The system according to claim 9 , further comprising the portable device.
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JPJP2020-096914 | 2020-06-03 | ||
JP2020096914A JP2021187389A (en) | 2020-06-03 | 2020-06-03 | Enclosure device and system |
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JP4881095B2 (en) * | 2006-07-28 | 2012-02-22 | 株式会社東海理化電機製作所 | Key system |
JP2008190170A (en) * | 2007-02-02 | 2008-08-21 | Calsonic Kansei Corp | Keyless entry system for vehicle |
JP5088026B2 (en) * | 2007-07-13 | 2012-12-05 | マツダ株式会社 | Smart keyless entry system |
JP5038238B2 (en) * | 2008-06-12 | 2012-10-03 | 株式会社東海理化電機製作所 | Vehicle function restriction system |
US8487743B2 (en) * | 2008-08-18 | 2013-07-16 | GM Global Technology Operations LLC | Valet keyfob system |
US8965287B2 (en) * | 2011-04-01 | 2015-02-24 | Tony Lam | Battery powered passive keyless entry system for premise entry |
DE102012221016B4 (en) * | 2012-11-16 | 2017-06-22 | Micro-Sensys Gmbh | Locking unit, locking device and method for unlocking and / or locking a lock |
US10017960B2 (en) * | 2014-01-14 | 2018-07-10 | Bekey A/S | Key box |
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JP6656134B2 (en) * | 2016-10-12 | 2020-03-04 | 日本電産モビリティ株式会社 | Door control system |
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